<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" v-model="AllCheck" />
    </label>
    <span>
      <span>已完成{{ allComplate }}</span> / 全部{{ AllNum }}
    </span>
    <button class="btn btn-danger" @click="deleteAllComplate">
      清除已完成任务
    </button>
  </div>
</template>

<script>
export default {
  naem: "Footer",
  props: ["todoList", "isAllCheck", "deleteAllComplate"],
  computed: {
    // 1.全部数量
    AllNum() {
      return this.todoList.length;
    },
    // 已经完成的数量
    allComplate() {
      const arr = this.todoList.filter((item) => {
        return item.done === true;
      });
      return arr.length;
    },
    // 全选按钮
    AllCheck: {
      get() {
        return this.allComplate === this.AllNum && this.AllNum !== 0;
      },
      set(status) {
        this.isAllCheck(status);
      },
    },
  },
};
</script>

<style>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>
